Split collar mounting tool



June 9, 1953 w. J. WILLIAMS ETAL SPLIT COLLAR MOUNTING TOOL Filed March 25, 1950 1/0 lllllll JNVENTOS. W/LL/AM J. W/LL lAMS 8 JAMES W E HANES.

Patented June 9, 1 953 2,641,054 SPLIT COLLAR MOUNTING TOOL William J. Williams and James W. E. Hanes,

Ventura, Calif., assignors to Ventura Tool Company, Ventura, Calif., a corporation of California.

Application March 25, 1950, Serial No. 151,922

4 Claims. (01. 29-436) Our invention relates to a tool to facilitate the mounting and dismounting of a split collar, such as a protective collar used around a drill pipe when operating in a well casing. Our tool is not limited, however, to such specific use.

One of the principal objects of this invention is to provide a tool for separating or opening a relatively stiff split collar so that it may be readily mounted on or removed from another member, such as a drill pipe and further that the opposite split portions may be readily moved, offset, or otherwise manipulated relative to each other'so that they may be fitted into or with respect to each other.

Another important object of this invention is to provide a tool of this class which may be readily placed around or removed from a collar of this class.

An important object also is to provide a tool of this class having movable jaw members which may be readily shifted to various positions for variously manipulating the tool and the collar.

A further important object of this invention is to provide a tool of this class which is relatively simple and economical of construction proportionate to its functions, and which may be readily adjusted and manipulated.

With these and other objects in view, as will appear hereinafter, we have devised a split collar mounting tool having certain novel features of construction, combination, and arrangement of parts and portions, as will be hereinafter described in detail, and particularly set forth in the appended claims, reference being had to the accompanying drawings and to the characters of reference thereon, which form a part of this application, in which:

Fig. l is a fragmentary plan view of our collar mounting and dismounting tool in a preferred form of construction, showing the same positioned arounda split collar and ma position preparatory to separating the same;

Fig. 2 is a fragmentary perspective view thereof, with the View taken from the back side of the tool;

Figs. 3 and 4 are fragmentary sectional views thereof, taken through 3-3 and 4-4 respectively of Fig. 1;

Fig. 5 is a fragmentary view thereof, showing an adjustment of one of the jaws to facilitate inward shifting or distortion of one of the split portions of the collar with respect to the other split portion;

Fig. 6 is a similar fragmentary view thereof, showing the opposite inward shifting or distortion of the split portions of the collar; and,

Fig. 7 is a view similar to that shown in Fig. l, but on a smaller scale and in a slightly modified form of construction.

The split collar, designated l in the drawings, is a metal reinforced split rubber collar for use in the oil well industry and is constructed to be mounted around a drill pipe to facilitate the slidable mounting or bearing thereof within a well casing. Beyond the split portions l and l of the collar extend interengaging members 2 and 3 for locking the split portion of the collar together when the same is placed around a drill pipe. As shown, the member 3 is provided with a locking lug 3 which may enter a locking recess 2 in the member 2.

Our tool comprises a split band I I made of two flexible arcuate shoes ll and IN which are hinged together at one end. At the outer sides of the shoes ll and ll are provided axia1 ribs H and H The ends of the rib are pivotally connected to each other to form the hinge li The length of both of the bands is approximately equal to the peripheral contour of the collar I.

Near the split portions of the bands, that is, near the separated ends of the bands N and ll are rigidly securedhandles in the form of levers l2 and I3. The inner ends of the levers, which are preferably round metal rods, are secured, preferably by welding, to the outer portions, and specifically the ribs II and H of the band. These levers or rods extend substantially in radial directions outwardly from the band.

On these levers or rods I2 and I3 are reciprocally mounted jaws I4 and [5. These jaws are of angular shape. The flanges l4 and [5 of the jaws l4 and I5 are positioned normal to the axes of the rods [2 and I3, respectively, and the other flange M and 15 of the respective jaws are positioned parallel to the axes of the rods. The latter flanges are positioned to engage the opposite split portions of the collar, as shown in Fig. 1. The jaws are provided with hubs [4 and [5 to provide extended bearings for the mounting of the jaws on the rods.

0n the rods are provided coil springs l6 which are positioned between the jaws and collars ll located at the outer ends of the springs for urging the jaws to their innermost positions.

When the tool is positioned around the collar l with the flanges or lugs 14 and 15 against the adjacent sides of the split portions of the collar, the tool is in position to open the collar and place it around a drill pipe, or other member. This may be effected by gripping the outer ends of the handle levers either with both hands or by separate individuals. When the collar is placed around the drill pipe, or other member, the jaw 15 is withdrawn against the compression of the spring and rotated through 180 degrees to the position shown in Fig. 5. The free end of the flange 15 is notched, as indicated by 15 in Fig. 2, for receiving the rib H and thus retaining the jaw I5 in its rotated position.

The tool is then rotated through a slight angle until the inner end of the flange [4 engages the peripheral or outer surface of the collar, as shown in Fig. 5. The two handle levers are then drawn together which naturally forces the interengaging members to move into positions shown in Fig. 5, that is, the interengaging member 2 is forced inwardly of the inner end of the locking lug 3 This permits the locking lug 3 to enter the locking recess 2 when the tool is slightly released, or the hand lever 12 drawn radially outwardly.

The laws I4 and 15 may then be reversed by drawing the jaw M against the compression of its spring and rotating it 180 degrees in the opposite direction, its notch M receiving the rib II, and then also rotating the tool in a clockwise direction, which causes the jaw l5 to engage the outer or peripheral portion of the collar at the opposite side of the split portion. The handle levers are then contracted with respect to each other so as to cause the inner interengaging member 3 to enter a recess 2 in the other interengaging member. The latter step, of course, is unnecessary if the interengaging member 3 enters such recess without being forced thereinto.

In the modified structure shown in Fig. '7, the above described jaw is replaced by a jaw 18 which is also slidably mounted on the rod or lever 12. However, the jaw in this instance is positively held in its inward position by a latch I9 which consists of a latch member pivotally mounted at its inner end on a lug at the outer side of the band, the lug in this instance being the reinforcing rib H. The latch member has a notch l9 at one side into which the outer end of the transverse flange l8 may extend. The latch memher, when shifted towards the jaw 18 over the outer end of the flange I8 holds the jaw in its inward position. This jaw construction is desirable for holdin the jaw inwardly, as shown.

We wish it to be understood that we do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

We claim:

1. In a split annulus mounting tool, a separable and contractible split band, a handle lever secured to and extending generally radially from the split portions of the band, both levers being capable of being gripped simultaneously and movable relative to each other for separating or contracting the band circumferentially, a jaw member mounted to slide longitudinally on and to rotate about one of the levers, said member havin a jaw portion at one end adapted to extend generally radially inwardly beyond the inner 4 portion of the band and adapted to be shifted to the diametrically opposite side of the lever, and a spring for urging the jaw member inwardly of the band.

2. In a split annulus mounting tool, a separable and contractible split band, a handle lever secured to and extendin generally radially from the split portions of the band, both levers being capable of being gripped simultaneously and movable relative to each other for separating or contracting the band circumferentially, a jaw member mounted to slide longitudinally on and to rotate about one of the levers, said member having a jaw portion at one end adapted to extend generally radially inwardly beyond the inner portion of the band and adapted to be shifted to the diametrically opposite side of the lever, and a spring positioned around the lever for urging the jaw member inwardly of the band.

3. In a split annulus mounting tool, a separable and contractible split band, a handle secured to and extending generally radially from each of the split portions of the band, both handles being capable of being gripped simultaneously and movable relative to each other for separating or contracting the band circumferentially, a jaw member mounted to move longitudinally with respect to one of said handles and to rotate about the axis of said one of said handles, said member having a jaw portion at one end adapted to extend generally radially inward beyond the inner portion of the band and adapted to be shifted about the axis of said one of said handles to another position.

4. In a split annulus mounting tool, a separable and contractible split band, a handle secured to and extending generally radially from each of the split portions of the band, both handles being capable of being gripped simultaneously and movable relative to each other for separating or contracting the band circumferentially, a jaw member mounted to move longitudinally with respect to one of said handles and to rotate about the axis of said one of said handles, said member having a jaw portion at one end adapted to extend generally radially inward beyond the inner portion of the band and adapted to be shifted about the axis of said one of said handles to another position, and means to Iacilitate retention of the jaw member in its shifted position.

WILLIAM J. WILLIAMS. JAMES W. E. HANES.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,106,198 Everett Aug. 4, 1914 1,157,082 Campbell Oct. 19, 1915 1,681,662 Douglass Aug. 21, 1928 FOREIGN PATENTS Number Country Date 153,987 Great Britain Nov. 25, 1920 

